
### samples.tab ###

"id"             : Participant ID code. These are consistent across the 3 data files.
"sample_num"     : Sample number. See Roulette et al. 2014.
"sample_date"    : Date sample was collected.
"volume"         : Volume of stool analyzed, in ml.
"direct_ancylo"  : Hookworm egg count using direct method. See Roulette et al. 2014.
"direct_ascaris" : Ascaris egg count using direct method. See Roulette et al. 2014.
"direct_trich"   : T. trichiura egg count using direct method. See Roulette et al. 2014.
"kato_ancylo"    : Hookworm egg count using kato method. See Roulette et al. 2014.
"kato_ascaris"   : Ascaris egg count using kato method. See Roulette et al. 2014.
"kato_trich"     : T. trichiura egg count using kato method. See Roulette et al. 2014.
"mif_ancylo"     : Hookworm egg count using mif method. See Roulette et al. 2014.
"mif_ascaris"    : Ascaris egg count using mif method. See Roulette et al. 2014.
"mif_trich"      : T. trichiura egg count using mif method. See Roulette et al. 2014.
"cotinine"       : Salivary cotinine concentration in ng/ml.
"pre_post"       : Was sample obtained pre or post albendazole/placebo administration.

### interview.tab ###

"id"                    : Participant ID code. These are consistent across the 3 data files.
"sex"                   : Participant sex.
"age"                   : Participant age, as estimated by Ngandu research assistants.
"region"                : Subpopulation 1, 2 or 3.
"smoker"                : Self-reported smoker status ("Do you smoke ndako?")
"radio"                 : "How many radios do you own?"
"clothes"               : "How many sets of clothes do you own?"
"flashlight"            : "How many flashlights do you own?"
"batteries"             : "How many batteries do you own?"
"watch"                 : "How many watches do you own?"
"forest_village"        : "Do you prefer life in the forest or in the village?"
"school_mona"           : "Did you attend elementary school?"
"school_bokala_ngondoa" : "Did you attend middle school?"
"church"                : "Do you attend church?"
"days_in_forest_since_treatment" : Days spent in forest between the intervention and collection of follow-up samples
"intervention"          : Treatment condition (albendazole) or control condition (placebo)
"worm_pill"             : Use of commercial anti-worm medicine outside of this study.

### cyp.tab ###

"id"         : Participant ID code. These are consistent across the 3 data files.
"year"       : Study year (this data file combines two studies: 2008 and 2010). 
"cyp2a6.1"   : CYP2A6 allele 1
"cyp2a6.2"   : CYP2A6 allele 2
"phenotype"  : Estimated metabolic phenotype, numeric (see Roulette et al. 2014)
"phenotype2" : Estimated metabolic phenotype, labeled (see Roulette et al. 2014)